/*
 *  tracker/RecPosProvider.cpp
 *
 *  Copyright 2009 Peter Barth
 *
 *  This file is part of Milkytracker.
 *
 *  Milkytracker is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Milkytracker is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Milkytracker.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include "RecPosProvider.h"
#include "PlayerController.h"
#include "ModuleEditor.h"

void RecPosProvider::getPosition(pp_int32& order, pp_int32& row)
{
    playerController.getPosition((mp_sint32 &)order, (mp_sint32 &)row);
    if (playerController.isPlayingPattern())
        order = -1;
}

void RecPosProvider::getPosition(pp_int32& order, pp_int32& row, pp_int32& ticker)
{
    playerController.getPosition((mp_sint32 &)order, (mp_sint32 &)row, (mp_sint32 &)ticker);
    if (playerController.isPlayingPattern())
        order = -1;

    if (roundToClosestRow)
    {
        mp_sint32 speed, bpm;
        playerController.getSpeed(bpm, speed);
        // snap position to the closest row
        if (ticker >= speed / 2)
        {
            ticker = 0;

            ModuleEditor* moduleEditor = playerController.getModuleEditor();
            row++;
            // playing pattern only?
            if (order != -1)
            {
                // get pattern index of current order
                pp_int32 patIndex = moduleEditor->getOrderPosition(order);
                // row exceeded
                if (row >= moduleEditor->getPattern(patIndex)->rows)
                {
                    // wrap
                    row = 0;
                    // increase order
                    order++;
                    // order exceeded?
                    if (order >= moduleEditor->getNumOrders())
                        // wrap song
                        order = 0;
                }
            }
            else
            {
                pp_int32 patIndex = moduleEditor->getCurrentPatternIndex();
                if (row >= moduleEditor->getPattern(patIndex)->rows)
                    // row exceeded
                    if (row >= moduleEditor->getPattern(patIndex)->rows)
                        // wrap
                        row = 0;
            }
        }
    }
}